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0. A. & A. BARRETT. COIN PREED DYNAMOMETER No. 452,688. Patented May 19,1891;

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No. 452,688. Patented May 19, 1891.

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00m FREED DYNAMOMETER. No. 452,688. Patented May 19, 1891.

UNITED STATES L PATENT Orricn.

OHARLE'SARTHUR BARRETT AND ALFRED BARRETT, OF LONDON, ENGLAND.

COlN-FREED DYNAMOMETER.

SPECIFICATION forming part of Letters Patent N 0. 452,688, dated May 19,1891.

Application filed April 15, 1890.

T0 to whom it may concern.-

, Be it known that we, CHARLES ARTHUR Baa.

serted in the apparatus, the muscular grip ping or pulling power of aperson using it will be indicated on a dial inthe usual manner; but ifthe power be exerted beyond a certain predetermined point a bell or gongwill be sounded; and, in addition, we provide an arrangement whereby atthe same or at any other given point the coin or the like will bereturned outside the machine to the person using it. If, however,sufficient power be not exerted to reach the aforesaid given point orpoints, the bell or gong will not sound nor will the coin be returned,but will drop into a box provided to receive it in the ordinary manner.

In order to enable our invention to be fully understood, we willdescribe how it can be carried into practical effect by reference to theaccompanying drawings, in which- Figure 1 is a front elevation of anautomatic or coin-freed machine for testing the muscular gripping powerof a person, the said machine being constructed according to ourinvention. Figs. 2 and 3 are elevations showing the interior of the sameas seen from the rear and right-handside, respectively, the back andside of the case being removed for this purpose. FigA is a horizontalsection on the lineA Aof Fig. 3. Fig. 5 is avertical section of aportion of the front of the case of the apparatus, showing the slidingbar, hereinafter described, in its normal position. Fig. 6 is a rearview of the same parts. Fig. 7 is a horizontal section on the line B 13of Fig. 5. Fig. Sis a similar view to Fig. 5,but showing the sliding barwhen partly drawn out. Figs. 9 and 10 are views of a detail hereinafterdescribed.

Similar reference-letters indicate similar or corresponding partsthronghoutthe drawings. In carrying out our invention we employ asuitable case a, the upper front part a of Serial No. 347,968. (Nomodel.)

which is advantageously set back relatively to the lower front part athey being conin Fig.- 3. On the part a of the front of the said case weattach a fixed bar, handle,orfulcrum b. A sliding bar 0 passes throughand slides in an opening in the said part a of the frame 0. By means ofa handle 0 attached by the grip of the hand toward the fixed bar,handle, or fulcrum b when a proper coin is inserted in the apparatus;but otherwise the sliding bar is kept in its normal position by a boltor look f, Figs. 3, 4, and 6, which is only released when the coin orthe like is inserted, the lower'end of the bolt or lock f for thispurpose projecting in front of an extension 0 (see Fig. 4:) on thesliding bar 0, so as to prevent the latter being drawn out until this isdone.

d d are springs which form the resistance against the power exerted,they being attached at one end to extensions e a (see Fig. 4) on the bar0 and at the other end to the frame 0'. The bolt f slides in arecess fat one side of the coin-chute g and is raised by the coin dropped intothe apparatus through the medium of a small lever g, curved or arched inform and pivoted in the said coinchute, one end of the said lever gbearing beneath a shoulderf on the boltf and the other end projecting inthe way of the coins and provided with asmall extension which extendsinto an opening 9 in the rear wall of the coin-chute, the sides of thesaid opening serving to limit the movement of the lever g, andconsequently of the bolt f. In the part a of the case a is arranged theslot h for the insert-ion of the coins in the apparatus, the said slotbeing situated just above the chute g. (See Fig.

WVhen the coin has raised the bolt f, it rests upon the upper inneredges z" e" of the two sides of an aperture '6 in the sliding bar 0. Ifthe bar 0 be now drawn beyond a certain distance, the support iswithdrawn from the coin by reason of a wider portion L of the saidaperture in the bar coming beneath it, through which it falls onto theupper inner edges 9' j of the two sides of a fixed bracket j, situatedbelow the sliding bar a. The lower nected with a sloping part 0. asshown clearly front of the case a and in the rear part of ato thesliding bar 0, the said bar can be drawn portion of the bracketj forms aguide to a ehutej which leads to a receptaclcj" at the outside of thepart a of the case a. By this construction it a coin of the requiredsize be passed through the coin-slot h it will fall and rest upon theedges 'i i of the sides of the aperture 1' in the sliding bar 0, asshown by the dotted lines a; in Figs. 5 and G, and at the same time willmove the lever g into the potion also shown by dot and dash lines inFig. 6, thereby raising the boltf. If new the handles Z) and c begripped and the sliding bar 0 consequently drawn out, the portion i ofthe aperture 1 in the said sliding bar will come beneath the coin-chuteg and the coin will fall through it onto the upper edgesjj of the sidesof the bracket j, as shown bythe dotted lines 0; in Figs. 6 and 8. Bycontinuing the outward movement of the bar 0 the coin will be moved bythe said bar along the top of the bracketj till it arrives beyond thefront extremity of the edges j when it will fall through the chute intothe receptacle from whence it can be taken by the operator. If, however,the strength of the operator is not great enough to produce theforegoing result the coin as the grip is released will be moved backalong the top of the bracket j, and when the sliding bar 0 is again backand again fixed in position by the boltf the coin will have arrivedbeyond the back extremity of the edges j j and will fall into themoneydrawer. (Not shown in the drawings.)

To prevent the lever 5 being operated by the insertion through thecoin-chute 5 of a piece of wire or the like, we provide a plate j,attached to an extension f on the sliding bar 0, so that when the saidbar is drawn out the said plate will come against the wire or the like,which will prevent any further movement of the bar c.

If a coin the diameter of which is less than the width of the aperture 6be inserted in the apparatus, it will not rest either upon the edges ofthe said aperture or upon the edges j, but will fall through and beconducted to the receptacle 3", or by arranging the rear wall j of thebracket j a little nearer to the front of the apparatus the said coinwould fall into the money-drawer.

Attached to the sliding bar a is an inclined plane 7;, which, as the baris drawn out, actuates avertical rod is, which bears upon it, the rodit" being provided with a friction-roller for that purpose and workingthrough guides 7;, on a frame 7.). in the rod are cut rackteeth whichgear into and operate a spurpinion I, through the medium of which theshaft Z and pointer Z are actuated to inclicate the power exerted, thepointer Z working over the dial m, located at the part of the case a.

lhe rod 7c. is provided with an india-rubber spring 7t or its equivalentto keep its roller 7.? always in contact with the inclined plane 7t, andthe shaft Z" is provided with a weighted lever Z which keeps the topsurfaces of the teeth /.'7 of the rack. in constant contact with theteeth of the pinion, thereby insuring an accurate indication by thepointer 7 A catch or tongue 71 is pivoted to an extension a on thesliding bar 0 in such a manner that it can only turn in one direction,as shown in Figs. 3 and 4t.

0 is a gong or hell, the hammer 0 of which is pivoted and forms aspring-trig or catchpiece against which the catch n bears when thesliding bar 0 is drawn out. By this arrangement when the sliding bar isdrawn out the top of the catch '12 will press back the hammer 0, andwhen the sliding bar 0 has reached a predetermined point the said hammerwill be released and strike the gon In moving back the sliding bar 0 thecatch a will, when it strikes the hammer o, be depressed and pass underthe said hammer and will then re gain its normal position.

In order to prevent this machine from be ing used as an ordinarypulling-machine, which might be done by placing one hand on the machineand then pulling the handle 0 with the other hand,we provide on the partof the machine that the hand could only be stiltably placed upon aloose-hinged plate 2). This plate is hinged at p and forms a portion ofthe part a of the case a, and is supported or held in its normalposition by an upward extension p" at the end of a lever 19", pivoted tothe frame 0' and supported at its free end by a spring 1). The lever 11is provided on its under surface with a tooth or projection 135, whichis nor mally situated above but to the front of the extension c, Fig.4-, the said extension being provided with a series of ratchet-teeth p,as clearly shown in Figs. 0 and 10, which represent a plan andelevation, respectively, of the said extension detached. By this arrangement, if the operator should press upon the plate 1) with his or herdisengaged hand in order to exert more strength, by mlling the handle 0toward the handle Z) the said plate will be depressed and cause theteeth on the lever p to move in the path of the extension 0 or to engagewith the ratchet-teeth 1), thereby preventing any further outwardmovement of the sliding bar 0.

In cases where it is deemed advisable to provide against thesurreptitious removal of the machine we find it convenient to suspenditin such a manner that while allowing of its being operated by the gripof the hand it will offer no resistance to pressure when an attempt ismade to use it as a pulling-machine.

We sometimes adapt to the apparatus a reed or reeds to form a voice orvoices to be operated by the return of the sliding bar or otherwise; butwe make no claim herein for this, and therefore have not illustrated it.

\Vhen required a disk can be fixed on the pointer-shaft Z behind thedial m, so as to move with the pointer Z and exhibit any advertisementthereon through an opening in the said dial.

It will be obvious that if We wish to employ our dynamometer. fortesting the muscular power exerted by a person in pulling, we dis pensewith the fixed handle-bar or fulcrum b, the machine in this case beingsecured to a table, counter, or the like.

Having now particularly described and ascertained the nature of our saidinvention and in What manner the same is to be performed, we declarethat what we claim is- 1. In a coin-freed dynamometer adapted fortesting the power of a hand-grip, the combination, with a coin-receiver,of the handles b and c slide-bar c, to which a is attached, and reactingsprings d, connected to bar 0, the latter being provided with the twoopenings '5 4?, all substantially as and for the purposes set forth.

2. In combination, the handles band 0 one of them being fixed and theother adapted to slide and attached to a slide-bar c, reacting springsattached to extensions on said slidebar, said bar having openingst'fi,as described,

slide-bolt f, and coin-chute g, all substantially as shown anddescribed.

3. In combination, the coin-receiving chute provided with a lever g anda bolt f, a slidebar having the aperturesz' and 11 and bracket 3, havingedges jj, and the coin-delivering chute, all substantially as set forth.

4. In combination with the sliding bar 0, the loose hinged plate 19,hinged at p and constituting part of the sloping part a of the case aand serving when pressed down to arrest the further outward movement ofthe slide-bar.

5. In combination with the case, the bar 0, hinged plate 19, extension19 lever 19 spring 19 tooth or projection p and ratchet-teeth 19,substantially as and for the purpose set forth.

CHARLES ARTHUR BARRETT. ALFRED BARRETT. Witnesses:

A. ALBUTT, B. BRADY.

